JRA is a three-letter abbreviation for:

• Japan Racing Association - horse-racing
• Japanese Red Army
• Jeff Reine-Adélaïde, French footballer
• Jewish Relief Agency
• Joint Replacement Aircraft
• Johannesburg Roads Agency, South African based road agency
• The Journal of Roman Archaeology
• Juvenile rheumatoid arthritis
• Juvenile Rehabilitation Administration
• Juvenile Restoration Act
• Jamtland Republican Army - the name of the independence movement of the Republic of Jamtland